Checking electrical system, vario roof (VR)

AD77.50-P-6000A

Checking electrical system, vario roof (VR)

3.7.97

Danger!

Risk of injury in the form of trapping or crushing when working on preloaded springs or spring devices

Use only the approved clamping devices, and cordon off the danger zone if appropriate.

Check special tools for damage and correct functioning (visual inspection). Wear protective gloves.

AS00.00-Z-0001-01A

Danger!

Risk of injury as a result of trapping or crushing when working on the partly open vario roof (stop mode) or within its closing range as a result of the vario roof suddenly collapsing

Secure the vario roof with a suitable special tool.

AS77.50-Z-0001-01A

Danger!

Risk of injury in the form of trapping or crushing, or even severing of limbs, if caught in the mechanism

When moving the components, no parts of the body or limbs may be within the mechanism's range of movement.

AS00.00-Z-0009-01A

Vario roof (VR) diagnosis, previous knowledge

AD77.50-P-2000A

Using and connecting up test devices

AD00.00-P-1000AZ

Vario roof (VR), position of electrical components

GF77.30-P-0001-01A

Vario roof (VR), interconnection of components

GF77.30-P-0001-03A



After performing checks on the vario roof, read out the fault memory and erase if appropriate

a

Fuses OK

b

Battery voltage 11–14 Volt (when working on the vario roof, always connect up battery charger).

c

Before disconnecting or connecting a coupling on the multi-function control module (N10-3), always disconnect the battery negative terminal (faults will otherwise erroneously be stored).

d

Insert model-specific test module in Hand-Held Tester

e

Connect up Hand-Held Tester (HHT)

AD00.00-P-2000-03A

Checking

1

Voltage supply for terminal 30E, 31E, checking electrical system, vario roof (VR)

AD77.50-P-6000-01A

2

Voltage supply for terminal 30A, 31A, checking electrical system, vario roof (VR)

AD77.50-P-6000-02A

3

Voltage supply for terminal 15R, checking electrical system, vario roof (VR)

AD77.50-P-6000-03A

4

Voltage supply for terminal 15, checking electrical system, vario roof (VR)

AD77.50-P-6000-04A

5

Voltage supply for terminal 30B, 31B, checking electrical system, vario roof (VR)

AD77.50-P-6000-05A

6

Hydraulic unit motor (A7/5m1), checking electrical system, vario roof (VR)

AD77.50-P-6000-06A

7

Energizing of pump relay (A7/5k1) by multi-function control module (N10-3), checking electrical system, vario roof (VR)

AD77.50-P-6000-07A

8

Overload protection thermocouple (A7/5b1), checking electrical system, vario roof (VR)

AD77.50-P-6000-08A

9

Vario roof "locked" limit switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-09A

10

Vario roof "closed" limit switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-10A

11

Vario roof "open/lowered" limit switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-11A

12

Trunk lid "open" limit switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-12A

13

Trunk lid "closed/locked" limit switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-13A

14

Trunk partition "closed" limit switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-14A

15

Trunk lid rotary tumbler/trunk lamp toggle switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-15A

16

Voltage supply for malfunction indicator lamp in vario roof switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-16A

17

Energizing multi-function control module from vario roof switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-17A

18

Vario roof switch light, checking electrical system, vario roof (VR)

AD77.50-P-6000-18A

19

Ground connection for left front power window switch from multi-function control module, checking electrical system, vario roof (VR)

AD77.50-P-6000-19A

20

Left front power window switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-20A

21

Energizing of left front power window motor from multi-function control module, checking electrical system, vario roof (VR)

AD77.50-P-6000-21A

22

Left front power window motor, checking electrical system, vario roof (VR)

AD77.50-P-6000-22A

23

Ground connection for right front power window switch from multi-function control module, checking electrical system, vario roof (VR)

AD77.50-P-6000-23A

24

Right front power window switch, checking electrical system, vario roof (VR)

AD77.50-P-6000-24A

25

Energizing of right front power window motor from multi-function control module, checking electrical system, vario roof (VR)

AD77.50-P-6000-25A

26

Right front power window motor, checking electrical system, vario roof (VR)

AD77.50-P-6000-26A

27

Energizing of left rear power window motor from multi-function control module, checking electrical system, vario roof (VR)

AD77.50-P-6000-27A

28

Left rear power window motor, checking electrical system, vario roof (VR)

AD77.50-P-6000-28A

29

Energizing of right rear power window motor from multi-function control module, checking electrical system, vario roof (VR)

AD77.50-P-6000-29A

30

Right rear power window motor, checking electrical system, vario roof (VR)

AD77.50-P-6000-30A

31

Energizing of vario roof solenoid valve, checking electrical system, vario roof (VR)

AD77.50-P-6000-31A

32

Energizing of trunk lid cylinder, checking electrical system, vario roof (VR)

AD77.50-P-6000-32A

33

Energizing of gong in instrument cluster, checking electrical system, vario roof (VR)

AD77.50-P-6000-33A

34

Status signal from wheel speed sensor, checking electrical system, vario roof (VR)

AD77.50-P-6000-34A

35

Speed signal, checking electrical system, vario roof (VR)

AD77.50-P-6000-35A